THE MOST IMPOTANT STEP PRIME PRIME PRIME!

Paperhanging and Interior Painting does not except responsibly for injury, property lost or damage for the information below. Each project may differ. Always consult with your retailer or the manufacturer for your particular project and follow the products instructions carefully.

Installing wallcovering why you must prime.
99.9% of all instructions that come with wallcovering state to use a wallcovering primer. That by itself should be a good reason to prime before installing wallpaper. Using a quality wallcovering primer/ sealer helps to make future wallpaper removal much easier. A wallcovering primer will do two things; seal the paint, and promote adhesion. A wallcovering primer that promotes adhesion will make it possible to hang wallpaper on difficult surfaces, such as glossy paint. Flat latex paint finishes are porous and may soften and weaken as the paste dries, causing bubbles and seams to open. The moisture in paste can absorb through the paint all the way into the paper facing of sheet rock, making future removal difficult and may result in a lot of drywall damage.
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Painting after wallpaper has been removed.
Removing wallpaper is only half the battle. The manufactures of wallpaper stripping solutions all state in their instructions to wash off the old paste and rinse the walls with clean water. You have to be careful sometimes on unprimed walls, over scrubbing and washing may cause drywall damage. If this is the case, allow the walls to dry thoroughly, usually over night, and sand the walls the next day. Next, if you are going to paint, spot prime any torn gypsum with GARDZ. Repair any torn drywall, nail pops, dents, with spackle or joint compound, and sand walls. Prime the walls with GARDZ High Performance Sealer or a sealing/stain killing oil-based primer. Always check first with your paint store retailer. If after washing the walls, there is any paste residue or the paste has absorbed into the paint surface, not applying the correct primer first the latex paint might crackle .
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Painting over interior glossy paints.
The instructions on interior latex paints generally states to clean the surface of any contaminants and sand glossy surfaces dull. Sanding doors, doorframes, chair rail, moldings, baseboards, etc. can be quite difficult with all the intricate detail. There are a few primers that stick to glossy paints surfaces without sanding. What happens if you either don’t sand the surface dull or prime with the correct primer? I have seen many times were the paint did not bond to a glossy paint and peel
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Benjamin Moore & Co has a Matt Finish paint that a lot of my customer love, it has a flat finish is resistant to most common household stains, can be washed, and easily touched-up. I never recommend Eggshell to my consumers. Depending on the brand, color, and lighting, it sometimes shows roller stoppage and does not touch up well. Paint sheen goes from dull too shiny and is not standardized among paint companies. Common paint sheen’s are flat, eggshell, satin, semi-gloss, and high gloss. Check your paint store retailer for sample chips.

How to remove wallpaper.
Three main factors: the type of wallpaper, paint or primer under the wallpaper, and type of paste used to install the wallpaper. Here is a short video on how to remove wallpaper eHow.